Count number of items with property

Question

I have list List where Custom is like

class Custom{
    public int id;
    public String name;
}

How to

Answer 1

Easier probably not. Now you could store your objects in a Map > instead where the key is the name. To get the number of items where name == "Tom" you can then simply do:

List l = myMap.get("Tom");
int count = 0;
if (l != null) {
    count = l.size();
}